Above the Fold
'Above the Fold' is a design term, traditionally applied to newspapers, describing all the content on the top half of a newspaper's front page. On the web, above the fold is used to describe all the content on a web page, before the user has to scroll down. It is considered good practice to have as much quality content as possible above the fold.
Because every user's computer setup is different, there is no set amount of space that is guaranteed to be above the fold, but it is possible to generalize and design a page with most users in mind.
Google's Adsense program is designed to match advertisements to the content on a publisher's web site. In theory, AdSense will choose relevant ads, provided through Google's AdWords program, to display to your visitors. If a visitor is interested in an AdSense ad they will click on it, giving the AdSense publisher credit for their click.
Google shares a portion of their AdWords income with AdSense publishers who's sites have generated clicks. It is Google's goals with AdSense to make advertisements on publisher sites relevant and useful to web site visitors, and to expand the available ad coverage for AdWords advertisers.
Google's AdWords is, "[Google's] platform offering both cost-per-click and cost-per-impression pricing for advertisements served on Google.com and partner sites."
AdWords publishers pay for inclusion of their ads in Google's popular search results, and in partner sites that display advertiser ads through the Google AdSense program.
AdWords is Google's main source of revenue, and is considered by many to be the biggest, best, and most effective pay-for-traffic solution available today.
In the context of search marketing, "algorithm" is usually a reference to a search algorithm.
Search engine companies engineer complicated algorithms that automatically return relevant search results from their index for their users' search queries.
Images displayed in HTML have the option of an alt tag, which provides the browser with alternate text, to use when the picture can not be displayed. Alt text is the text that an alt tag contains.
Using the alt tag is helpful in SEO, as it gives the search engine robots a better idea of what the image portrays on a site.
In HTML, anchor text refers to any text wrapped in HTML anchor tags. Anchor tags are used to designate hyperlinks, or links, on a web page. Anchor tags can be used to link a variety of web page elements to other web pages or web sites. When anchor tags are used on text, they are more useful to search engine crawlers.
The text found between the opening and closing anchor tags is called the anchor text, and is used by search engines to determine the topic or content of the page being linked to.
For example, if you have a web site about cars, and five people are linking the word "cars" to your web site from their web site, this will give your cars related web site more credibility for your topic. If, rather than "cars," those five people are linking the word "cats" to your web site, the anchor text will be misleading to the search engines, instead of helpful.
It is a good idea to whenever possible, have relevant and descriptive anchor text, to best leverage the search engines.
An application programming interface is an interface that defines ways for a 3rd party software to request data or services from an existing program.
For example, a search engine API allows outside software to request search results data through the search API.